[WIP] Send email notification for long standing topic

app/jobs/unresolved_topic_email_notification.rb

@@ -0,0 +1,40 @@
+load File.expand_path("../../../lib/refinements/user_notification_standing_topic.rb", __FILE__)
+
+module Jobs
+  class UnresolvedTopicEmailNotification < ::Jobs::Scheduled
+    using DiscourseSolved::Refinements::UserNotificationStandingTopic
+
+    every 1.day
+    def execute(args)
+      puts "email notification #{email_notification_enabled}"
+      if email_notification_enabled
+        unresolved_topics = Topic.joins(:category, :_custom_fields, category: :_custom_fields ).
+          where(
+            topic_custom_fields: {
+              name: 'accepted_answer_post_id',
+              value: nil
+            },
+            category_custom_fields: {
+              name: 'enable_accepted_answers',
+              value: 'true'
+            }
+          ).where(
+            "topics.created_at <= ?::date + '1 day'::interval",
+            Date.today - SiteSetting.solved_email_notification_delay.days
+          )
+          puts unresolved_topics
+          unresolved_topics.each do |topic|
+            begin
+              email = UserNotifications.new.longstanding_topic(topic.user, { topic: topic })
+              email.deliver
+            rescue Exception => e
+            end
+          end
+      end
+    end
+
+    def email_notification_enabled
+      SiteSetting.solved_email_notification_delay > 0 && SiteSetting.solved_enabled
+    end
+  end
+end

config/locales/server.en.yml

@@ -6,6 +6,8 @@ en:
     empty_box_on_unsolved: "Display an empty box next to unsolved topics"
     solved_quote_length: "Number of characters to quote when displaying the solution under the first post"
     solved_topics_auto_close_hours: "Auto close topic (n) hours after the last reply once the topic has been marked as solved"
+    solved_email_notification_delay: "Days until first email notification for unsolved topic sent. Insert '0' for never send email notification for unsolved topic."
+    solved_email_notification_repeat: "Days of repeated notification sent (After first notification sent). Insert '0' for never send repeated email notification."
   reports:
     accepted_solutions:
       title: "Accepted solutions"
@@ -15,3 +17,11 @@ en:
     no_solutions:
       self: "You have no accepted solutions yet."
       others: "No accepted solutions."
+    email:
+      long_standing_topic_notification:
+        subject_template: "It is been %{days_since_topic_created} days since you created %{topic_title}. Consider follow up the topic to get more feedback."
+        text_body_template: >
+          It is been %{days_since_topic_created} days since you created
+          %{topic_title}. Consider follow up the topic to get more feedback.<br/>
+          Topic&#58; %{topic_title}<br/>
+          Date&#58; %{topic_created_at}<br/>

config/settings.yml

@@ -16,3 +16,6 @@ plugins:
     client: false
   solved_topics_auto_close_hours:
     default: 0
+  solved_email_notification_delay:
+    default: 0
+    client: true

lib/refinements/user_notification_standing_topic.rb

@@ -0,0 +1,23 @@
+module DiscourseSolved
+  module Refinements
+    module UserNotificationStandingTopic
+      refine ::UserNotifications do
+        def longstanding_topic(user, opts)
+          build_email(user.email,
+                      template: "solved.email.long_standing_topic_notification",
+                      locale: user_locale(user),
+                      email_token: opts[:email_token],
+                      days_since_topic_created: days_since_topic_created(opts[:topic]),
+                      topic_title: opts[:topic].title,
+                      topic_created_at: opts[:topic].created_at.to_date.to_s(:long)
+                    )
+        end
+
+        private
+        def days_since_topic_created(topic)
+          (Date.today - topic.created_at.to_date).to_i
+        end
+      end
+    end
+  end
+end

plugin.rb

@@ -11,6 +11,7 @@
 register_asset 'stylesheets/solutions.scss'
 
 after_initialize do
+  load File.expand_path("../app/jobs/unresolved_topic_email_notification.rb", __FILE__)
 
   # we got to do a one time upgrade
   if defined?(UserAction::SOLVED)